diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/cldf-prs.lua')
-rw-r--r-- | Master/texmf-dist/tex/context/base/cldf-prs.lua | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/cldf-prs.lua b/Master/texmf-dist/tex/context/base/cldf-prs.lua new file mode 100644 index 00000000000..9fbdba0c88a --- /dev/null +++ b/Master/texmf-dist/tex/context/base/cldf-prs.lua @@ -0,0 +1,54 @@ +if not modules then modules = { } end modules ['cldf-bas'] = { + version = 1.001, + comment = "companion to cldf-ini.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local lpegmatch, patterns = lpeg.match, lpeg.patterns +local P, R, V, Cc, Cs = lpeg.P, lpeg.R, lpeg.V, lpeg.Cc, lpeg.Cs +local format = string.format + +local cpatterns = patterns.context or { } +patterns.context = cpatterns + +local backslash = P("\\") +local csname = backslash * P(1) * (1-backslash)^0 +local sign = P("+") / "\\textplus " + + P("-") / "\\textminus " +local leftbrace = P("{") +local rightbrace = P("}") +local nested = P { leftbrace * (V(1) + (1-rightbrace))^0 * rightbrace } +local subscript = P("_") +local superscript = P("^") +local utf8char = patterns.utf8char +local cardinal = patterns.cardinal + +-- local scripts = P { "start", +-- start = V("csname") + V("lowfirst") + V("highfirst"), +-- csname = csname, +-- content = Cs(V("csname") + nested + sign^-1 * (cardinal + utf8char)), +-- lowfirst = subscript * ( Cc("\\lohi{%s}{%s}") * V("content") * superscript + Cc("\\low{%s}" ) ) * V("content") / format, +-- highfirst = superscript * ( Cc("\\hilo{%s}{%s}") * V("content") * subscript + Cc("\\high{%s}") ) * V("content") / format, +-- } + +local scripts = P { "start", + start = V("csname") + V("lowfirst") + V("highfirst"), + csname = csname, + content = Cs(V("csname") + nested + sign^-1 * (cardinal + utf8char)), + lowfirst = (subscript /"") * ( Cc("\\lohi{") * V("content") * Cc("}{") * (superscript/"") + Cc("\\low{" ) ) * V("content") * Cc("}"), + highfirst = (superscript/"") * ( Cc("\\hilo{") * V("content") * Cc("}{") * (subscript /"") + Cc("\\high{") ) * V("content") * Cc("}"), + } + +local scripted = Cs((csname + scripts + utf8char)^0) + +cpatterns.scripts = scripts +cpatterns.csname = csname +cpatterns.scripted = scripted +cpatterns.nested = nested + +-- inspect(scripted) +-- print(lpegmatch(scripted,"10^-3_x")) +-- print(lpegmatch(scripted,"10^-a")) + |